package comwyu.vegetablebirdcommuntiy.controller;

import comwyu.vegetablebirdcommuntiy.entity.*;
import comwyu.vegetablebirdcommuntiy.event.EventProducer;
import comwyu.vegetablebirdcommuntiy.service.CommentService;
import comwyu.vegetablebirdcommuntiy.service.DiscussPostService;
import comwyu.vegetablebirdcommuntiy.service.LikeService;
import comwyu.vegetablebirdcommuntiy.service.UserService;
import comwyu.vegetablebirdcommuntiy.util.CommunityUtil;
import comwyu.vegetablebirdcommuntiy.util.HostHolder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;

import java.util.*;

import static comwyu.vegetablebirdcommuntiy.util.CommunityConstant.*;

@Controller
@RequestMapping("/discuss")
public class DiscussPostController {

    @Autowired
    private DiscussPostService postService;

    @Autowired
    private UserService userService;

    @Autowired
    private CommentService commentService;

    @Autowired
    private HostHolder hostHolder;

    @Autowired
    private LikeService likeService;
    @Autowired
    private EventProducer eventProducer;

    @PostMapping("/add")
    @ResponseBody
    public String addDiscussPost(String title, String content) {
        User user = hostHolder.getUser();
        System.out.println(user);
        if (user == null) {
            return CommunityUtil.getJSONString(403, "你还没有登录!");
        }

        DiscussPost discussPost = new DiscussPost();
        discussPost.setUserId(user.getId());
        discussPost.setTitle(title);
        discussPost.setContent(content);
        discussPost.setCreateTime(new Date());
        postService.addDiscussPost(discussPost);
        // 触发发帖事件
        Event event = new Event()
                .setTopic(TOPIC_PUBLISH)
                .setUserId(user.getId())
                .setEntityType(ENTITY_TYPE_POST)
                .setEntityId(discussPost.getId());
        eventProducer.fireEvent(event);


        // 报错将来统一处理
        return CommunityUtil.getJSONString(0, "发布成功");
    }

    // 帖子详情
    @GetMapping("/detail/{discussPostId}")
    public String getDiscussPost(@PathVariable("discussPostId") int discussPostId, Model model, Page page) {
        // 帖子
        DiscussPost post = postService.findDiscussPostById(discussPostId);
        model.addAttribute("post", post);
        // 作者
        User user = userService.findUserById(post.getUserId());
        model.addAttribute("user", user);

        // 点赞
        long likeCount = likeService.findEntityLikeCount(ENTITY_TYPE_POST, post.getId());
        model.addAttribute("likeCount",likeCount);
        // 点赞状态
        int likeStatus = hostHolder.getUser() == null ? 0 :
                likeService.findEntityLikeStatus(hostHolder.getUser().getId(), ENTITY_TYPE_POST, post.getId());
        model.addAttribute("likeStatus",likeStatus);

        // 评论分页信息
        page.setLimit(5);
        page.setPath("/discuss/detail/" + discussPostId);
        page.setRows(post.getCommentCount());
        // 评论：给帖子的评论
        // 回复：给评论的评论
        // 评论列表
        List<Comment> commentList =
                commentService.findCommentByEntity(
                        ENTITY_TYPE_POST,
                        post.getId(),
                        page.getOffset(),
                        page.getLimit());

        // 评论VO列表
        List<Map<String, Object>> commentVoList = new ArrayList<>();
        if (commentList != null) {
            for (Comment comment : commentList) {
                // 评论VO
                Map<String, Object> commentVo = new HashMap<>();
                // 评论
                commentVo.put("comment", comment);
                // 作者
                commentVo.put("user", userService.findUserById(comment.getUserId()));

                // 点赞
                likeCount = likeService.findEntityLikeCount(ENTITY_TYPE_COMMENT, comment.getId());
                commentVo.put("likeCount",likeCount);
                // 点赞状态
                likeStatus = hostHolder.getUser() == null ? 0 :
                        likeService.findEntityLikeStatus(hostHolder.getUser().getId(), ENTITY_TYPE_COMMENT, comment.getId());
                commentVo.put("likeStatus",likeStatus);

                // 回复列表
                List<Comment> replyList =
                        commentService.findCommentByEntity(ENTITY_TYPE_COMMENT, comment.getId(), 0, Integer.MAX_VALUE);
                // 回复VO列表
                List<Map<String, Object>> replyVoList = new ArrayList<>();
                if (replyVoList != null) {
                    for (Comment reply : replyList) {
                        Map<String, Object> replyVo = new HashMap<>();
                        // 回复
                        replyVo.put("reply", reply);
                        // 回复的作者
                        replyVo.put("user", userService.findUserById(reply.getUserId()));

                        // 点赞数量
                        likeCount = likeService.findEntityLikeCount(ENTITY_TYPE_COMMENT, reply.getId());
                        replyVo.put("likeCount",likeCount);
                        // 点赞状态
                        likeStatus = hostHolder.getUser() == null ? 0 :
                                likeService.findEntityLikeStatus(hostHolder.getUser().getId(), ENTITY_TYPE_COMMENT, reply.getId());
                        replyVo.put("likeStatus",likeStatus);

                        // 回复的目标
                        User target = reply.getTargetId() == 0 ? null : userService.findUserById(reply.getTargetId());
                        replyVo.put("target", target);

                        replyVoList.add(replyVo);
                    }
                }
                commentVo.put("replys", replyVoList);
                //回复数量
                int replyCount = commentService.findCommentCount(ENTITY_TYPE_COMMENT, comment.getId());
                commentVo.put("replyCount", replyCount);
                commentVoList.add(commentVo);
            }
        }
        model.addAttribute("comments", commentVoList);
        return "/site/discuss-detail";
    }
}
